Safari intermittently hangs when loading FCGI request

Sen Haerens lists at
Tue Oct 19 01:08:13 MSD 2010

As you can see in attached debug log there is ±20 second delay before
returning the page to Safari 5.0.2. Profiling PHP-FPM and PHP script
itself show that they render under 0.03 seconds. The connection stall is
not happening in Firefox 3.6.10

These are the response headers in Safari:
Date:Mon, 18 Oct 2010 20:56:23 GMT

These are the response headers in Firefox:
Server: nginx/0.8.52
Date: Mon, 18 Oct 2010 20:56:02 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: close

I tested Nginx 0.8.52 with gzip off, keepalive_timeout 0,
fastcgi_max_temp_file_size 0 but no difference.

nginx version: nginx/0.8.52
TLS SNI support enabled
configure arguments: --conf-path=/etc/nginx/nginx.conf
--error-log-path=/var/log/nginx/error.log --pid-path=/var/run/
--http-scgi-temp-path=/var/lib/nginx/scgi --with-debug
--with-http_stub_status_module --with-http_flv_module
--with-http_ssl_module --with-http_gzip_static_module
--with-http_realip_module --with-ipv6 --without-mail_pop3_module
--without-mail_imap_module --without-mail_smtp_module --with-file-aio


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